Donna Jean Thatcher Godchaux-MacKay (August 22, 1947 – November 2, 2025) was an American singer best known as a member of the rock band the Grateful Dead from 1972 to 1979. In addition to the Dead, she performed with the Jerry Garcia Band and the short-lived Heart of Gold Band, all alongside her first husband, Keith Godchaux. She formed the Donna Jean Godchaux Band in 2006.